如何在mPDF中的$ html中传递if语句？

问题描述：

How can I pass the if statement in the $html? I'm building pdf from the values of a form and I'm not sure how I can pass this if statement with the html.

I'm using mPDF version 6 to generate pdf.

I've researched for a while but didn't couldn't figure out the right way. So, I really appreciate your suggestions. Thanks in advance.

<?php
   include('mPDF/mpdf.php');

   $name = $_POST["name"];
   $age = $_POST["age"];

   $html = '<html>
               {if (!empty($_POST['name'])) echo 'Name: ' . $name;}<br>
               {if (!empty($_POST['age'])) echo 'Age: ' . $age;}
            </html>';
   $mpdf = new mPDF();
   $mpdf->WriteHTML($html);
   $mpdf->Output();
   ?>

This is the form in case you need a look:

<form method="post" action="generatePDF.php">   
   Name: <input type="text" name="name" id="name"  /><br>
   Age: <input type="text" name="age" id="age"  /><br>
</form>

如何在$ html code中传递 if code>语句 >？我正在从表单的值构建pdf，我不知道如何使用html传递此 if code>语句。 p>

我正在使用 mPDF code>版本6来生成pdf。 p>

我已经研究了一段时间，但却无法找到正确的方法。所以，我非常感谢你的建议。在此先感谢。 p>


 ＆lt;？php 
 include（'mPDF / mpdf.php'）; 
 
 $ name = $ _POST [“name”];  
 $ age = $ _POST [“age”]; 
 
 $ html ='＆lt; html＆gt; 
 {if（！empty（$ _ POST ['name']））echo'Name：'。  $ name;}＆lt; br＆gt; 
 {if（！empty（$ _ POST ['age']））echo'Oge：'。  $ age;} 
＆lt; / html＆gt;'; 
 $ mpdf = new mPDF（）; 
 $ mpdf-＆gt; WriteHTML（$ html）; 
 $ mpdf-＆gt; Output（）; 
？  ＆gt; 
  code>  pre> 
 
 这是您需要查看的表格： p> 
 
 
 ＆lt; form method =“  post“action =”generatePDF.php“＆gt;  
名称：＆lt; input type =“text”name =“name”id =“name”/＆gt;＆lt; br＆gt; 
年龄：＆lt; input type =“text”name =“age”id =“age  “/＆gt;＆lt; br＆gt; 
＆lt; / form＆gt; 
  code>  pre> 
  div>

答

I will rather change this to below, so that I don't' have check for conditions in HTML. Perform all conditions beforehand and have the variables ready which can be used in HTML, to generate the PDF:

<?php
   include('mPDF/mpdf.php');

   $name = !empty($_POST["name"]) ? 'Name: ' . $_POST['name'] : '';
   $age = !empty($_POST["age"]) ? 'Age: ' . $_POST["age"] : '';

   $html = '<html>' . 
               $name . '<br>' .
               $age . 
            '</html>';
   $mpdf = new mPDF();
   $mpdf->WriteHTML($html);
   $mpdf->Output();
   ?>

答

First you need to use Double Quote

$html=" code "; // because variable execute only in double quote

Second you need to use if statement outside the string

if (!empty($_POST['name'])){ $prnt_name='Name: ' . $name;}
if (!empty($_POST['age'])) { $prnt_age= 'Age: ' . $age;}
$html = "<html>
           $prnt_name<br>
           $prnt_age
       </html>";

答

You cannot embed PHP code in string literals. Build your $html string in a conventional way:

<?php
   include('mPDF/mpdf.php');

   $name = $_POST["name"];
   $age = $_POST["age"];

   $html = '<html>' . (!empty($name) ? 'Name: ' . $name : '') . '<br>'
                    . (!empty($age) ? 'Age: ' . $age : '') .
            '</html>';
   $mpdf = new mPDF();
   $mpdf->WriteHTML($html);
   $mpdf->Output();
   ?>

如何在mPDF中的$ html中传递if语句？

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